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1·The soil bulk reduced, the soil porosity and permeability improved.

地块的土壤容重减少，提高土壤膨松度，增强土壤透气性。

2·This paper is a new subject of the study on cohesive soil porosity by microscopic quantitative analysis.

本文是对粘性土孔隙进行微观定量研究的新课题。

3·There is a clear linear positive correlation between the soil water infiltration rate and the soil porosity.

土壤入渗速率与孔隙度之间具有明显的线性正相关关系。

4·Soil radium contents, water contents, soil porosity and grain size were concretely analysed in our laboratory.

采集土壤样品，在实验室进行土壤镭含量、含水量、孔隙度和粒径分布等物理性质测量。

5·The mixed forest transformed net increase in forest litter layer of the soil surface allowed the small soil bulk density and larger soil porosity.

改造后的纯林内增加了土壤表面的枯枝落叶层，从而使得其内的土壤容重小，土壤孔隙度变大；

6·The results indicated that green coverings improved soil physical characteristics, soil bulk density decreasing by 5.68% and the soil porosity increasing by 6.15%.

结果表明：生草可改善土壤物理性状，使土壤容重平均降低5.68%，总孔隙度提高6.15%。

7·Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.

四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。

8·The results showed that after skidding operation, the soil density increased, the soil moisture condition got bad, the soil porosity and the contents of soil nutrients decreased.

通过对半悬索道集材后林地土壤理化性质的分析，结果表明：半悬索道集材后土壤容重增加，土壤结构和水分性能变差，土壤养分含量下降。

9·The volume quality of top soil is increased and the soil porosity is reduced owing to compaction, so water flow downward difficultly and the amount of water vertical infiltration is reduced.

由于压实，增加了表层土壤的体积质量，降低了土壤孔隙度，水不易向下运动。

10·Soil organic matter, soil porosity, availible N, Zn, Fe, Mn and enzyme are all positively related to the amount of straw applied remarkably, while soil specific weight is negatively correlative.

土壤有机质、孔隙度、速效氮、锌、铁、锰、酶活性等理化指标与秸秆还田量呈显著正相关；